tigefa4u projects Trac

remove test of validity in `PermissionSystem.revoke_permission` since it prevented removing permissions from disabled components (fixes #2146)

Ported r4357 to 0.10-stable (fixes #3490)

use `LEFT JOIN` in reports for priority info in case priorities have been deleted (fixes #3490)

The "?format=raw" parameter for attachment URLs was wrongly overridden. Fix #4250.

Follow-up to r4333, fix the attachment unit tests.

The remaining `attachment:` TracLinks tests were moved to tests/wikisyntax.py, with the others already there. Plus added a few `raw-attachment:` tests.

Improved the TracLinks for changesets:
- the "r<revnum>" style has been made more strict; now it only accepts digits, no more hex digits.
- the "[<revnum>]" style still accepts hex digits, but the <revnum> has to have at least 8 digits (12 is common practice)
- the Subversion backend has now a restricted list of aliases for the latest changeset: only "head", "latest", "youngest" or the empty string are now accepted.

Fixes #4261.

calls to `select` method of `Component` and `Version` from r4350 should use it as a class method

0.10.3dev: Ported r4349, fix for #4174 (''sort query by time'')

Encode filename parameter in the Content-Disposition header using
rfc2231 encoding. This fixes #4255.

Fix the `exists()` status for Component and Version.

Thanks to Simon for the report and the testing and to Tim Hatch for the fix.

Closes #4247.